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/*
* Copyright (C) 2014 Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <QCoreApplication>
#include <QLockFile>
#include <signal.h>
#include <execinfo.h>
#include "listener.h"
#include "log.h"
#undef DEBUG_AREA
#define DEBUG_AREA "resource"
void crashHandler(int sig)
{
std::fprintf(stderr, "Error: signal %d\n", sig);
QString s;
void *trace[256];
int n = backtrace(trace, 256);
if (n) {
char **strings = backtrace_symbols(trace, n);
s = QLatin1String("[\n");
for (int i = 0; i < n; ++i) {
s += QString::number(i) + QLatin1String(": ") + QLatin1String(strings[i]) + QLatin1String("\n");
}
s += QLatin1String("]\n");
std::fprintf(stderr, "Backtrace: %s\n", s.toLatin1().data());
if (strings) {
free(strings);
}
}
std::system("exec gdb -p \"$PPID\" -ex \"thread apply all bt\"");
// This only works if we actually have xterm and X11 available
// std::system("exec xterm -e gdb -p \"$PPID\"");
std::abort();
}
int main(int argc, char *argv[])
{
// For crashes
signal(SIGSEGV, crashHandler);
QCoreApplication app(argc, argv);
if (argc < 2) {
Warning() << "Not enough args passed, no resource loaded.";
return app.exec();
}
const QByteArray instanceIdentifier = argv[1];
app.setApplicationName(instanceIdentifier);
QLockFile lockfile(instanceIdentifier + ".lock");
lockfile.setStaleLockTime(500);
if (!lockfile.tryLock(0)) {
Warning() << "Failed to acquire exclusive lock on socket.";
return -1;
}
Listener *listener = new Listener(instanceIdentifier, &app);
QObject::connect(&app, &QCoreApplication::aboutToQuit, listener, &Listener::closeAllConnections);
QObject::connect(listener, &Listener::noClients, &app, &QCoreApplication::quit);
return app.exec();
}
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